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    Integrated compact mmW spectroscopy cell system and method
    21.
    发明授权
    Integrated compact mmW spectroscopy cell system and method 有权

    公开(公告)号：US11719577B2

    公开(公告)日：2023-08-08

    申请号：US17157674

    申请日：2021-01-25

    Applicant: Texas Instruments Incorporated

    Inventor： Adam Joseph Fruehling ,  Juan Alejandro Herbsommer ,  Argyrios Dellis

    IPC: G01J3/42 ,  G01N21/3581

    CPC classification number: G01J3/42 ,  G01N21/3581

    Abstract: A compact mmW spectroscopy cell system for detecting volatile organic compounds (compounds) in a gas. The system includes a gas collection chamber, an input buffer cavity for receiving the gas from the gas collection chamber, pumping devices to pass the gas from the buffer cavity to an absorption cell and maintain pressure, and a transceiver connected to the cell. The transceiver interrogates the absorption cell filled with the gas by passing a high frequency electromagnetic signal and sweeping the signal to generate an absorption spectra which is compared to a spectroscopy database for detecting the compounds in the gas. The absorption cell, collection chambers, and pumping devices are fabricated with standard CMOS processing techniques at chip and wafer scale. The transceiver bonded to the absorption cell with chip scale integration.

    Background suppression for doppler-free mm-wave spectroscopy
    23.
    发明授权
    Background suppression for doppler-free mm-wave spectroscopy 有权

    公开(公告)号：US11280746B2

    公开(公告)日：2022-03-22

    申请号：US16730838

    申请日：2019-12-30

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Argyrios Dellis ,  Juan Herbsommer ,  Adam Joseph Fruehling

    IPC: G01R27/04 ,  G01N22/00 ,  G01N22/04 ,  G01N21/3581 ,  G01N22/02 ,  G01N21/3563 ,  G01N27/02 ,  A61B5/05 ,  A61B5/0507

    Abstract: A system includes first and second gas cells each comprising a respective sealed interior waveguide; first transmit antenna coupled to the first gas cell to provide a first electromagnetic wave to the first gas cell along a first direction; second transmit antenna coupled to the first gas cell to provide a second electromagnetic wave to the first gas cell along a second direction opposite the first direction; third transmit antenna coupled to the second gas cell to provide a third electromagnetic wave to the second gas cell; first receive antenna coupled to the first gas cell to generate a first signal indicative of an amount of energy in first electromagnetic wave; second receive antenna coupled to the second gas cell to generate a second signal indicative of an amount of energy in second electromagnetic wave; and processor to calculate a background-free signal based on a difference between first and second signals.

    Millimeter wave chip scale atomic clock
    25.
    发明授权
    Millimeter wave chip scale atomic clock 有权

    公开(公告)号：US11126144B2

    公开(公告)日：2021-09-21

    申请号：US16844819

    申请日：2020-04-09

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Bichoy Bahr ,  Argyrios Dellis ,  Juan Alejandro Herbsommer ,  Baher Haroun

    IPC: H03B17/00 ,  G04F5/14 ,  H03L7/26 ,  G06F1/08 ,  H03L7/099

    Abstract: A clock generator includes a hermetically sealed cavity and clock generation circuitry. A dipolar molecule that exhibits a quantum rotational state transition at a fixed frequency is disposed in the cavity. The clock generation circuitry is configured to generate an output clock signal based on the fixed frequency of the dipolar molecule. The clock generation circuitry includes a detector circuit, a multiplier, and reference oscillator control circuitry. The detector circuit is coupled to the cavity, and is configured to generate a detection signal representative of an amplitude of a signal at an output of the cavity. The multiplier is coupled to the detector circuit, and is configured to multiply the detection signal with a mixing signal to produce a derivative of the detection signal. The reference oscillator control circuitry is configured to set a frequency of a reference oscillator based on the derivative of the detection signal.

    MOLECULAR ATOMIC CLOCK WITH WAVE PROPAGATING ROTATIONAL SPECTROSCOPY CELL
    28.
    发明申请
    MOLECULAR ATOMIC CLOCK WITH WAVE PROPAGATING ROTATIONAL SPECTROSCOPY CELL 审中-公开

    公开(公告)号：US20200272107A1

    公开(公告)日：2020-08-27

    申请号：US16871835

    申请日：2020-05-11

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Juan Alejandro Herbsommer ,  Bichoy Bahr ,  Argyrios Dellis ,  Adam Joseph Fruehling

    IPC: G04F5/14 ,  H03B17/00 ,  H03L7/26

    Abstract: A clock apparatus includes: (a) a gas cell, including a continuous path cavity including a sealed interior for providing a signal waveguide; (b) an apparatus for providing an electromagnetic wave to travel along the continuous path cavity and for circulating around the continuous path cavity back toward and past a point of entry of the electromagnetic wave in the continuous path cavity; (c) a dipolar gas inside the sealed interior of the cavity; and (d) receiving apparatus for detecting an amount of energy in the electromagnetic wave, wherein the amount of energy is responsive to an amount of absorption of the electromagnetic wave as the electromagnetic wave passes through the dipolar gas.

    MILLIMETER WAVE CHIP SCALE ATOMIC CLOCK
    29.
    发明申请
    MILLIMETER WAVE CHIP SCALE ATOMIC CLOCK 审中-公开

    公开(公告)号：US20200241480A1

    公开(公告)日：2020-07-30

    申请号：US16844819

    申请日：2020-04-09

    Applicant: TEXAS INSTRUMENTS INCORPORATED

    Inventor： Bichoy Bahr ,  Argyrios Dellis ,  Juan Alejandro Herbsommer ,  Baher Haroun

    IPC: G04F5/14 ,  H03B17/00 ,  H03L7/26 ,  H03L7/099 ,  G06F1/08

    Abstract: A clock generator includes a hermetically sealed cavity and clock generation circuitry. A dipolar molecule that exhibits a quantum rotational state transition at a fixed frequency is disposed in the cavity. The clock generation circuitry is configured to generate an output clock signal based on the fixed frequency of the dipolar molecule. The clock generation circuitry includes a detector circuit, a multiplier, and reference oscillator control circuitry. The detector circuit is coupled to the cavity, and is configured to generate a detection signal representative of an amplitude of a signal at an output of the cavity. The multiplier is coupled to the detector circuit, and is configured to multiply the detection signal with a mixing signal to produce a derivative of the detection signal. The reference oscillator control circuitry is configured to set a frequency of a reference oscillator based on the derivative of the detection signal.

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